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Chain works with partial keys. If successful, it finds one record only. I am not even sure that it finds the first record; just that it finds one record.

James H. H. Lampert wrote:
When CHAINing a file in program-described mode (the file is
externally-described, but its exact record structure is not known at
compile time), is there a way to CHAIN on a partial key, the way you can
in externally-described mode? Or do you have to do a SETLL and READE?

--
JHHL



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